Combined valve-cutter and valve-seat reamer.



. s. M. TRAMMBLL. COMBINED VALVE CUTTER AND VALVE SEAT BBAMEB.

APPLICATION rum) us. 21, 1910.

Patented July 19, 1910.

xAttorney, v

Ill

INVENTOR 15/0 06! Mac/n00 Tia/7mm :TR-AK-IIEBLL, a-citizen of STATES PATE T:

M. 'I-BAMMELL, or wasnmoron, msrmosr or comma;

orrion.

I comma]; vanvn op'rrnn AND VALVE-seam REAMER.

Be it known that I, Smmar MAURICE residin at Washington, in the District ot- Colum ia, have invented acertain new and 'Ej' usefi l Combined Va'lv -Cutter and Waive:

Seat Reamer,

I specification, reference being had therein .to

e accompanying drawing.' 7 H invention relates to a combined valve cutterand valve seat reamer, the i'nvent-ion being-"especially designed with refs -erence to use. 'on automobiles and internal; combustion engines generally wherein-valves and valve seats are employ a device of the character specified which maybe used both for cutting a new .face on a valve and-"cuttin anew face or valve seat in the cylinder 0 engiiie' 'without removing the cylinder from the remainder of the "engine, the 'improved "device embodying in'oonnection with ahead,

- illustrated and claimed.

. is a perspective n w essentially'a head a lurality' of cutters carried. by bit holders w ich are adjustable to valves'and valve seats of difi'erent sizes and which-are also reversible'so that the-device'asa-whole may. be used alternatelyfor cutting or refacing valves and valve seats, while obtaining absolute accuracy in the pitchcf the working .faces of the valve and valve seat. With the above and other objects in view, the nature of which will more fully appear as the description proceeds, the invention consists in the novel construction, combination and arrangement herein fully described,

"In the accompanying drawings: Figure 1 of the device of this inventlon with the cutting bits and holders Fig. 2

is a diametrical sectionthrough the same showing a pair oL'cutting bits and holders in elevationand the relation of the valve and valve stem thereto while refacing the valve. Fig. 3 shows the manner of using the device in connection with a valve seat, a portion of the engine being shown in sectionand the device being shown in elevation.

The device of this invention comprises as shown in Fi 1 where it is seen to comprise in the pre erred emrbodiment of the mvention a series of arms 1 radiating from a common center, each {rm being provided with a longitudinal the United States,

of which the following is a 7 axially reversed The object-ofthe invention is toprov de of adjustment byan internal combustion .series of openings 2 for the reception of one of the holdersfor the cuttingbits' {i The head also comprises a centrally' arranged shank 5 preferably square in cross section and adapted to be clamped in-avise or the like for holding the tool as a whole staas illustrated in Fig. 2. v

The holes 2 are preferablysquarewhile the bit holders 3 which are ofany suitable length are of, corresponding shape in cross section so as to prevent therotationof the holders in the holes 2 of the arms This also permits the holders 3 to be removed and and replaced in position fora purpose which will hereinafter appear. The holders 3' .are held at any desired point means of set screws '6 which-are inserted through'threaded holes 7 in the arms 1 so as to bear against the hold-' tion, each otthe bit holders 3 has its outer end deflected at an angle-as shown at 8 and split as'shown .at 9 to form a' pair otjaws between whichthe cutti bit 4 is held,.the bit being clamped screw 10 or its equiva ent passing through one 3' aw and engaging the threaded opening in the other jaw. The inner faces of the jaws are also rabbeted or grooved to form dove-tailed seats ,for the reception of the cutting bits 4 while the cutting bit is preferably made of triangular shape in cross section to fit within the rabbeted-jaws and to further rovide a plurality of cutting edges as clear y illustrated in Fig. lany one of which edges may-be disposed outwardly to act on the beveled faceof the valve or valve seat as the case may be. Itwill be observed also that the cutting bits 4: may be slid in the direction of their length for cutting large or small valves. In case of a wide variation in the sizes of the valves the cutting bit holders 3 may be set toward or away from the center of the head by laoingthem' in the appropriate'holes 2 in t head.

For the purpose of cuttinga valve, the cutting bits and their holders arearranged as shown in Figs. 1 and 2 with the edges of the bits disposed toward each other so as to operate simultaneously on the workin face of thevalve as shown in Fig. 2. Under this arrangement, the head of the device is held tionary while cutting a new face on a valve ers 3 and revent sliding movement th'ereof I Patented J 1910.; manta m n nn- 21.19.19. Serial No. ssaesa. I

aceby means of a 1 a shown in Fig.-2.'

in a vise or the like while the'valve ind; cated at 11 is turned by meansofa screw driver engaged in the niche 12 of the valve,- the valve being steadied in its rotation-by 5 means of the valve stem 13 which passes through a central ide o ening 1A 1n the j head and shank the' evice,k,'as clearly In order to ream valve opening 15 of the cylinder as shown in Fig. 3 with the cutting bits 4 reversed. as comparedwith Figs. 1 and, 2, the upper edges of the cutting bits being di osed 15 away from each other. The cylinder, ing held-in any. suitable way, the device is roj tated andthis may be accomplished by any T Lsuitable' device such as an ordinary hand brace.; ;;--In orderjto enable such hand'brace to be-used in c'onnection'with the device.

; abovefdescribed, the shank; is counterbored at its-outer end as shownatlfi and I internally screw threadedto receive a brace v bit.L 7 adaptedto be carriedbyan ordinary: 2 5 braceand provided with a 'coll'ai-"18 forming"- v a shoulder adapted to bear against'theen 'otthe shank 5 as'shownin Fig; l From .the foregoing-description; it will be observed that -the holders 3 withtheir-bits 30 4 are axially reversible so that the bits-4 may "be presented at either angle to cut the valve or the valve seat; also that the -valve-'l iold-- ersmay bead usted in the direction'of their length to properly reach and o erate upon 35 a valve seat; furthermore that t e bit hold .e1sl' 3may.be set nearer to.or. farther from the central guide opening 14;.to accommodate the device to valves and valve seats of \videly diffe'rent sizes. It will also be's een 0-that thc cutting bits 4'- m'ay .be adjusted in 'the directionof their length in the-jaws of the holders thereby also increasing the latitude of adj ustment'of the device as a whole.

out the valved seat of a 10 motor, =.the device is'inserted-through the carried in. said sockets; I

2. A combin d valve cutter and valve seat centerin clearly shown in Fig.

. What'is claimed r j L 'A combined valve cutter and valve seat -reamercom rising a head-'Fformedwith a central-gui e opening extending" axially throughv the 'same,: a plurality; of" metalfacing bit holders axially reverslble inopenings in the head and provided with inclined bit holding sockets; and l'netal facing bits ream'er-comprisinga head provided vvithl- I meansand a plurality of metal facing'bit holders axially reversible 'on the'.)

head, and. having .,.inelined weutti'ng i edges 1 forming valve OI'YB-IVQ seat facin "bits.

3;] A combined valve cutter an valve seat /eentra1-. gui e- V opening, extending: '=-axiallythrough the I- same a plurali direction 'of their length. i In testimony whereof Iatfix carried in saidsockets and adjustable n the my signature in presence of two witnesses;

I SIDNEY MHTRAMMELLV Witnesses:' w y REXFORD M. SMrrH, BENNE'r'r S. J0NEs.

"reamer comprising-aheadformed: with a ofmetal 7 5' faei'ng bit holder's axially reversible in open-' ings-in'the head and-provided.with-inclined'" bit holding sockets,'. and, metal facing bits 

